Pumping power



Nov. 12, 1940. w. c. TROUT ETAL 2,221,292

PUMPING POWER Nov. 12, 1940. w.. c. TROUT ETA.. 2,221,292

PUMPING POWER Filed Jan` 25, 1956 5 Sheets-Sheet 2 FRED GRAHAM.

TEUM/ Nov. 12, 1940.

w. c. rRoUT ET Al.

PUMPING POWER Filed Jan. 25, 1956 3 Sheets-Sheel*l 3 gmc-who@ \N.C.TROU1T FRED GRAHAM.

Patented Nov. i2, 1940 UNITED STATES 2,221,292 PUMPING POWER Walter C.

rlrout and Fred Graham, Lufkin, Tex.,

assignors to Lufkin Foundry & Machine Company, Lufkin, Tex.

, a corporation Application `lanuary 25, 1936, Serial No. 60,795

2 Claims.

The invention relates to an improvement in pumping powers of the type wherein a plurality of pull rods are connected to a single power unit.

The invention generally is in the nature of an improvement over the patent to Trout, No. ll, issued March 7, 1933.

lt is one of the objects of the inventionto provide a pumping power which may be readily positioned in a pre-formed base and which can be readily removed therefrom with little difficulty.

Another object of the invention is to provide a pumping power base with a socket to receive the pumping power mechanism.

Another object of the invention is to provide apuinping power with a vertical sliding pinion drive connection for the main gear so that any tilting action of the main gear relative to the drive pinion can be absord.

Another object of the invention is to compenof a pumping power the eccentricity of the sate for the tilting action gear which is caused by load on such gear.

Still another object of the invention is to provide a support in a pumping power', for the stub shaft therein.

Another object of the invention is to provide a dental clutch connection for a pumping power drive pinion. 1

Still another object of the invention is to provide a splined shaft support for a pumping power drive pinion.

Other and further objects of the invention will be readily apparent when the following description is considered in connection with the accompanying drawings wherein:

Fig. l is a vertical sectional -view taken on the line I-I of Fig. 2 of the pumping power embodying the invention installed in for operation.r

Fig. 2 is a top plan view of thepumping power of Fig. 1 but showing part of the-cover broken away to illustrate the bridge support for the stub shaft. Y

Fig. 3 is a section taken on the line 3-3 of iig. 2.

Fig. 4 is a sectional view similar to Fig. 3 but illustrating the splined shaft' form of the pinion gear support.

Fig. 5 is a section taken on the line 5-5of Fig; 4 and showing the splined shaft and. gear in section. y

A pumping power is a large heavy pieceV of equipment which mustbe rigidly anchored in order to withstand its basev and ready the eccentric loads which.v Y areapplied thereto by. virtue ofthe connection of a plurality of pump rods to the eccentricy crank. The usual practice is to form a concrete foundation and while this concrete is moist to seat the pumping power therein so that it will be firmly bonded to the concrete and anchored 5l in position. It is not uncommon that a pumping power which is anchored in this manner must' be removed or transferred to `some other location and itY has been found necessary under these circumstances to blast the equipment loose from its foundation with disastrous results tothe equipment. v Y

Fig. l shows the present invention as having been positioned upon a concrete base 2 which is pre-formed with a base plate `3 suitably an- 15 chored therein. This base plate has an outstanding flange d over which the concrete will lie in order to anchor it inthe foundation. An upstanding rim 5 is formed on the foundation and is arranged to receive the outer edge of the pumping power.

It will be noted that this base'plate 3 is formed with a tapered `portion l which is arranged'to cooperate with the tapered shank or boss 8 which is formed on the base 9 of the pumping power. In this manner the power will be properly located relative to the foundation and the tapered portions 'i and 8 will intert so that the power will he properly supported. Any desired number of anchor bolts l) ymay be carried by the portion 5 30 ofthe foundation so that the power can be suitably anchored. With this construction the mere loosening of the nuts on the bolts i@ will release the pumping power so that it can be removed without any dangerto the power or to the foundation. In this manner the vpower can be rey placed, if desired, on thesame foundation.

The pumping power'includes thehousing i5 of which the base 9 is a part and this housing is provided with la plurality of re-enforcing ribs it 40 on its outer periphery so as to make the power rugged enough to withstand the eccentric loads which are applied to it.

Inside of this housing itil and upon the base 9 is an upstanding support or boss 2t which is 45 provided with a central recess Mito receive the main gear shaft 22. This shaft will be deposited in the recess. 2l and is clamped in xed position by a hold-down plate 2? which may be shrunk to the shaft 22 and is-secured by the the flanged support 20. In this manner a shaft 22 is held immovable and is arranged to support the-main gear 25 thereon by means of the support bearings 2li and 2l. In this manner the main. gear is arranged nous 2t to 5o n for rotation relative to rthe shaft and is arranged to rotate with the crank table 28 'and the eccentric crank arm 29. This crank arm in turn carries the crank ring or disc 30 yto which the pull rods 3| from the well may be connected.

It will be noted that the crank table 28 is xed on the main gear'25 and compelled to rotate therewith as a unit.

A second support 32 is also carried by the base 9 and is arranged to support the-stub shaft 33. This stub shaft may be carried by a bearing 34 mounted in the support 32 and by a bearing 35 which is mounted in a bridge 3S. Or it may be xed in the supports and remain stationary if desired. In View of the fact 'that this stub shaft 33 must extend upwardly the height of the main gear it is desirable to properly support it and for this reason the bridge 36 has been positioned across the housing I5 from the lugs 37 in order to adequately support the top bearing 35. The stub shaft 33 carries the main gear drive pinion 45 which is best seen in Fig. 3, and has a plurality of teeth 42 thereon which are arranged to engage with similar teeth 4| on the periphery of the main gear 25. Rotation is imparted to the drive pinion 40 by means of the beveled gear 43 which is mounted thereon. This beveled gear `is in turn rotated by the drive gear 44 which is carried by a removable bearing 45 in the side of the power housing l5. The gear 44 is fixed on the drive shaft 46 to which power may be applied in any desired manner.

The foregoing constitutes a general description of the arrangement of the parts, but one of the principal features of the invention is to compensate for the tilting action of the main gear 25 relative to the housing. As will be apparent from Figs. 1 and 2 the principal load is applied to the crank disc 35 which is eccentrically arranged on the crank table and with respect to the main shaft 22. In some of the pumping powers embodying this invention the main gear 25 may approximate some 4 to 6 feet in diameter and the eccentric bending moment applied to the main shaft 22 istherefore considerable and it has been inadvisable to attempt to construct a shaft and gear of such strength to eliminate this tilting action. In event there is a tilting action between the main gear 25 and its drive pinion 4|) then, of course, normally there would be relative vertical movement between the teeth42 on the pinion and the teeth 4| on the main gear. This wear is material with herringbone teeth of the type here employed. Tol eliminate this wear the pinion 40 has been slidably mounted upon the stub shaft 33, as best seen in Fig. l, so that it may follow the tilting of the main gear 25. The lower edge of the drive pinion is formed with a toothed area 50 which is arranged to cooperate with a similar complementary toothed area 5| which is formed on top of the beveled gear 43. These toothed areas are in the form of a dental clutch and it will be noted that there is a space 52 between the teeth and the recesses in the cooperating parts in order to allow for clearance of sediment or other matter which may be deposited on this upwardly facing shoulder on the beveled gear 43. It will be noted, also, that there is a clearance 54 at the top of the pinion 40 so that it may move upwardly.

As the main gear 25 rotates it effects a tilting action due to the eccentricity of the load the periphery thereof may move in a vertical direction and because of the construction just described the pinion 40 may move with it and slide axially of the shaft 40 while the shaft either remains stationary or rotates therewith and while the power is being transmitted to the main gear by the pinion. In this manner any undue wear on the gear teeth 4| and 42 will .be eliminated because they will be properly in mesh at all times and there will be no excessive strain or stress because of the tilting action of the main gear. The teeth of the dental clutch will be of such length so that they will not become disengaged during the normal operation of the device.

Another feature of advantage with the device is the fact that the beveled gear 43 is mounted below the drive pinion 44 and below the pinion gear 43. This permits the main gear 25 to be positioned on the main shaft 22 closely adjacent the application of the load to the crank 29 and allows the teeth of the gear 43 to be upwardly xed so that they will be lubricated the full extent. This also permits a lower position of the drive shaft 46 and if desired the shaft 33 may be stationary with both the bevel gear 43 and pinion 46 rotatably mounted thereon. Furthermore, any looseness of the bearings is overcome by gravity whereas if a top bevel gear were used flected in movement and pounding of the gears.

It will be noted that the bearing assembly 45 is of a unit construction so that the bearing assembly drive shaft 46 and the drive pinion 44 may all be removed as a unit by releasing the nuts 60 on the bolts 6|. The set screws 52 serve to adjust this bearing and maintain it in proper alignment. The oil passages 63 allow a flow of lubricant from the bearing 54 to return inside of the housing I5 after it has been forced out through the passage 63 to pass outwardly to lubricate the outer bearing 64.

The oiling system is provided for the device and includes an oil pump 65 which is driven by a gear 5S' which meshes with a complementary gear on the drive shaft 46. The oil is drawn by this pump 65 through the suction inlet 61 from the base of the housing. It will be seen that a quantity of lubricant is always available in the base of the housing and this suction tends to circulate this lubricant through the passage 63 to the drive shaft bearings from which it may drain back into the base. A pipe 68 to the top bearing of the stub shaft 33 causes the lubricant to be sprayed out onto the top of the drive pinion 40 and between the teeth 4| and 42. From here the lubricant may settle into the bevel gear 43 in the recess 38 so that it will lubricate the drive pinion contactpassage 'l0 is formed inside oi the main shaft 22 so that the lubricant can be forcedV upwardly therethrough to overflow at the top, and in this manner lubricate the bearings 21 and 25 which support the main gear are lubricated.

A drain for the lubricant is seen at 7| and a gauge is shown at 'I2 whereby the level of lubricant in the base can be determined. e A'sea'l ring 'I5 is arranged upon the periphery of the crank table and has a downwardly extending lip thereon 'I6 which engages with a complementary lip on the cover portion TI of the housing I5. In this manner an oil-tight cover is provided and all dust and dirt is in this manner eX- cluded from the housing; Suitable cover plates 'I9 and 80 are provided on the crank table and the cover respectively so that entrance may be had to the inside of the housing without removing the cover.

Particular attention is directed to the construcany play would be re- 1 tion of the bridge 36 which is provided with a downwardly extending flange 8| as best seen in Fig. 1. 'Ihis ange tends to reenforce the bridge and provide a rigid construction in order to support the top of the stub shaft 33.

Fig. 4 shows a somewhat modied form of the invention wherein the stub shaft 33 is rotatably mounted and is provided with a plurality of splines or ribs 90 which are seen in section in Fig. 5. These splines are arranged to cooperate with complementary splines 9| formed on the inside of the pinion gear 42. In this manner this gear is permitted to slide vertically on the stub shaft to compensate for any tilting action of the main gear 25. This is an alternative form of compensating for the vertical movement in lieu of the dental clutch construction shown in Figs. 1 and 3.

What is claimed is:

1. In combination in a pumping power, a drive gear, a bevel gear driven thereby, a pinion above said bevel gear and rotatable thereby, a main gear meshing with said pinion, and means to discharge lubricant adjacent the top of said pinion whereby it will ow by gravity between said pinion and main gear and onto said bevel gear to said drive gear.

2. In a pumping power a housing, a drive shaft journaled in one side thereof, a gear mounted on said shaft, an oil pump operatively connected to said gear, a bevel pinion on said shafta second shaft journaled in said housing at right angles to said drive shaft and having a bevel gear meshing with the teeth at the lower side of said bevel pinion, a drive pinion on said second shaft and floatingly connected with said bevel gear, a' main gear in said housing meshing with and driven by said pinion and means for delivering oil from said pump to the top of said second shaft.

yWALTER C. TROUT.

FRED GRAHAM. 

